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NATURE OF OPERATIONS - Leased Property (Details) - USD ($) $ in Thousands | 3 Months Ended
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Mar. 31, 2023 | Mar. 31, 2022
Lessor, Description Of Leases [Line Items] |  |
Notice period for lease termination | 30 days |
Termination fees as a percentage of remaining lease payments | 10.00% |
Number of month's rent to be paid | 6 months |
Notice period for purchase of property | 30 days |
Extended term of lease | 48 months |
Notice period for exercise of renewal extension | 6 months |
Useful life | 15 years |
Depreciation expense on leased property | $ 160 | $ 170
Minimum |  |
Lessor, Description Of Leases [Line Items] |  |
Term of lease agreement | 96 months |
Maximum |  |
Lessor, Description Of Leases [Line Items] |  |
Term of lease agreement | 120 months |

X
- Definition Amount of expense charged against earnings for leased property. + References No definition available. + Details
Name: | legh_DepreciationLeasedProperty
Namespace Prefix: | legh_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | legh_LessorDescriptionOfLeasesLineItems
Namespace Prefix: | legh_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of months prior to which lessee should notify the intent to exercise the renewal extension option. + References No definition available. + Details
Name: | legh_LessorOperatingLeaseNoticePeriodForExerciseOfRenewalExtension
Namespace Prefix: | legh_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of days of written notice by lessee for purchase of property. + References No definition available. + Details
Name: | legh_LessorOperatingLeaseNoticePeriodForPurchaseOfProperty
Namespace Prefix: | legh_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of days of written notice by lessee for termination of lease. + References No definition available. + Details
Name: | legh_LessorOperatingLeaseNoticePeriodForTermination
Namespace Prefix: | legh_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of month's rent to be paid by lessee upon termination. + References No definition available. + Details
Name: | legh_LessorOperatingLeaseNumberOfMonthSRentPayableUponTermination
Namespace Prefix: | legh_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Termination fees recorded as a percentage of remaining lease payments to be paid by lessee. + References No definition available. + Details
Name: | legh_LessorOperatingLeaseTerminationFeesRecordedAsPercentageOfRemainingLeasePayment
Namespace Prefix: | legh_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Term of lessor's operating lease renewal, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 30 -Section 50 -Paragraph 3 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=124258985&loc=SL77919359-209981 + Details
Name: | us-gaap_LessorOperatingLeaseRenewalTerm
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | instant

X
- Definition Term of lessor's operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 30 -Section 50 -Paragraph 3 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=124258985&loc=SL77919359-209981 + Details
Name: | us-gaap_LessorOperatingLeaseTermOfContract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | instant

X
- Definition Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment. + References No definition available. + Details
Name: | us-gaap_PropertyPlantAndEquipmentUsefulLife
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | srt_RangeAxis=srt_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
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Namespace Prefix: |
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Balance Type: |
Period Type: |